8 days late

So I am currently late (8 days) and absolutely freaking out. I know my chances of being pregnant aren’t too high but I’m still scared as hell.

So there are two possible times where it could have happened where I didn’t use a condom (paired w/ birth control.) Both times I used plan b as well as religiously sticking to my birth control pills. (Did it on January 25 and February 8.) The first time we did it he ejaculated 4 times in me and the other time it was 6. I took plan b a few minutes after for both days. I know being late for period could be a side effect, but yeah... it’s been more than a week. My period was supposed to be 8 days ago and my last period was on January 17-21. Idk what my changes of pregnancy is if plan b is taken with birth control, but. Either way I’m worried. 😣